Races of Pyrenophora tritici-repentis in the Czech Republic

• Autorzy: Sarova J , Hanzalova A. , Bartos P.
• Języki publikacji: EN

Abstrakty

EN

Pyrenophora tritici-repentis, causal agent of tan spot, is one of the most important wheat leaf spot pathogens worldwide. The race stmcture of P. tritici-repentis isolates obtained from wheat (except one from noncereal grass species) in the Czech Republic was studied. The 86 monosporic isolates of P. tritici-repentis originated from different parts of the Czech Republic were grouped into five known races based on necrosis/chlorosis induction on standard differentials (Katepwa, Glenlea, 6B365, Salamouni). The isolates recovered from wheat were races 1, 2 and 4. Race 1 was the most frequent (50%), races 2 and 4 were found rarely (3% and 5% respectively). The isolate of P tritici-repentis recovered from noncereal grass species was determined as race 4 which seems to be typical for noncereal hosts. The reaction of 30 isolates (42%) was difficult to be compared to reactions of so far identified P. tritici-repentis races. They have to be tested again on additional wheat genotypes.

PL

Badano strukturę populacji P. tritici-repentis pod kątem występowania ras patogena. W analizie uwzględniono 86 jednozarodnikowych izolatów pochodzących z różnych regionów Czech a uzyskanych z pszenicy (85) i traw (1). Bazując na reakcji genotypów zestawu testowego (Katepwa, Glenlea, 6B365, Salamouni) stwierdzono występowanie trzech ras: 1, 2, i 4. Liczebnie dominującą była rasa 1, którą reprezentowało 50% izolatów. Rasa 2 i 4 stanowiła jedynie 3% i 5% populacji. Największą grupę (42%) stanowiły izolaty dla których reakcja roślin zestawu testowego uniemożliwiała jednoznaczną identyfikację jednej z 5 określonych ras patogena. Konieczne są dalsze badania z uwzględnieniem dodatkowych genotypów umożliwiających bardziej precyzyjną charakterystykę populacji P. tritici-repentis.

Słowa kluczowe

EN

Pyrenophora tritici-repentis; wheat; Czech Republic; genotype; fungal foliar pathogen; plant protection; wheat leaf spot pathogen

• Wydawca: -
• Czasopismo: Acta Agrobotanica
• Rocznik: 2005
• Tom: 58
• Numer: 1
• Opis fizyczny: p.73-78,fig.,ref.

Twórcy

autor

Sarova J

• Research Institute of Crop Production, Prague 6 - Ruzyne, Drnovska 507, 161 06, Czech Republic

autor

Hanzalova A.

autor

Bartos P.

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